Sewer Department

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Announcements

Effective March 16, 2020 the Water & Sewer Departments will be closed to the public in an effort to deduce the spread of the COVID-19 virus. If you need to contact us, please call or email us using the contact information on the right.

Sewer main cleaning & inspection

The Department has contracted National Water Main Cleaning Company to clean and inspect approximately 22 miles of sewer main.  The work will include the insertion of a high pressure jetting line to remove debris from the main prior to a closed-circuit television camera inspecting and recording the condition of the pipe.  This work is the final phase of the Infiltration & Inflow study that will help identify locations were groundwater is seeping into the system, causing unnecessary increases in flow through the wastewater treatment plant. The project is anticipated to last 5-6 weeks.InfiltrationWastewateroverflows__ResizedImageWzM1MCwyNzFd

The typical industry sewer line cleaning method uses a vactor truck with high pressure water jets. A cleaning nozzle is placed down a manhole. High pressure water jets then propel the nozzle and hose as far as 800 feet down the sewer line. During this process, air within the main sewer line is displaced and can sometimes make its way up private residential lateral pipes. When this happens, the air pushes the water residing in the toilet’s water bowl up and out of the toilet, causing it to “bubble”. This may also happen during the actual line cleaning phase when high pressure water is pulled back downstream to the vactor truck

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Energy & cost improvements

The Sewer Department was awarded a Baker-Polito Adminstration Gap II energy efficiency grant, and an incentive from National Grid, to refurbish three pumps at the wastewater plant.   An anticipated 57% decrease in electricity use at the pump building and a three month return on investment are expected.  Please see attached article for more information.

Smoke Testing - August 26 - Sept 13

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The Sewer Department and their contractor will be conducting smoke testing of six sub-systems within the collection system to locate sources of storm water inflow into the sanitary sewer system. The study will locate both direct and indirect connections, such as catch basins, roof drains and broken sewer pipes.  During the test harmless white smoke will be introduced into sewer manholes via smoke generating machine.  During the test, the white smoke will not enter your house unless you have defective plumbing or dried-up sink or floor drains. The smoke test should only affect your home for approximately 15 minutes.  See the public notification pages listed below for additional information:

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